ID: Both P.hepatica and P.nebulosa (Grey Arches) have a whitish to grey forewing (P.nebulosa can be blackish), with distinct, dark-outlined, pale oval, kidney ann dart marks. P.nebulosa has a more strongly curved costa especially in the apical 1/3. In P.hepatica the subterminal line is edged proximally with (3) black dashes at costal and dorsal ends and at ~1/3 from costa; P.nebulosahas interneural black arrow marks pointing basally from the subterminal line, the most prominent of which is at the dorsal end. In P.hepatica the grey thorax has a central reddish tuft; in P.nebulosa the thoracic tuft is grey, concolorous with the thorax. P.bombyina (Pale Shining Brown) is similarly marked but shining reddish-brown.